Evaluation of antioxidant properties of the different tissues of vine tea (Ampelopsis grossedentata) in stripped canola oil and sunflower oil

Abstract

The leaves of Ampelopsis grossedentata have a long history of use as a health tea and herbal medicine. Data on the distribution of active metabolites in, and antioxidant capacities of, different vine tea tissues remain incomplete. The aim of this work was to investigate the content of metabolites from A. grossedentata different tissues and evaluate the antioxidant capacities of the extraction of the species in vitro and in oil systems: canola oil and sunflower oil. To evaluate the degree of lipid oxidation, the peroxide value (POV) and thiobarbituric acid-reactive substance value (TBARS) were determined, and proton nuclear magnetic resonance ( 1 H-NMR) was performed. The results revealed a high total flavonoid content in each of the four extractions (>580 mg/g dried weigh). Leaf extractions exhibited higher antioxidant ability, followed by fruit extract and butylated hydroxytoluene (BHT). The POVs of oils bearing extracts of A. grossedentata and BHT maintained less than 21.08 meq/kg oil against to control with 1,406.33 ± 52.63 meq/kg oil on day 32 in canola oil, and 27.87 meq/kg oil comparing to 1,892.96 ± 48.63 meq/kg oil in control on day 24 in sunflower oil. Concurring results were also obtained in TBARS and 1 H-NMR analysis. Our results indicated that these different tissues of A. grossedentata could be a potential antioxidant resource, and this work may contribute to the comprehensive utilization of this species.Practical Application: Leaf extracts of Ampelopsis grossedentata showed effective antioxidant properties, followed by the fruit extract, which showed similar activity to that of the synthetic antioxidant of BHT. Moreover, the investigation of different tissues within the plant may contribute to the comprehensive utilization of this species.

Widely targeted metabolomic analysis reveals effects of yellowing process time on the flavor of vine tea (Ampelopsis grossedentata)

“…Anthocyanins themselves had a bitter taste. A study based on green tea ‘Longjing 43’ verified the relationship between positive regulation of anthocyanin biosynthesis pathway and negative impact on sensory evaluation, which is a ‘mirror image’ of our results ( Jia et al, 2020 ).…”

Monitoring the oxidation process of soybean oil during deep-frying of fish cakes with 1H nuclear magnetic resonance

“…The 1 H NMR spectra of the frying oil were collected according to the method described by Jia et al (2020 ). Briefly, 50–100 mg of the oil sample was dissolved in 0.6–0.7 mL of CDCl 3 and vortexed for 30 s. Then, the mixture was transferred to an NMR tube for further analysis using Bruker Advance III 600 spectrometer.…”

Mechanism of Dihydromyricetin on Inflammatory Diseases

“…It is generally known as that Calamus rotang L. tea is used as a heat clearing-herb in traditional Chinese medicine to promote diuresis and blood circulation ( Huang et al, 2018 ). In addition, N. grossedentata is common in South China and can also be eaten ( Jia et al, 2020 ). The leaves ( Li et al, 2020 ) and stems ( Gao et al, 2017 ) of the N. grossedentata are also known as vine tea.…”